Pennsylvania oil regions an air compressor is represented, on the end of which there . adjustable screw pressing upon a plate that rests on the top for the month of October was 2,094,6C8 barrels. The con of a spiral spring, which keeps the valve closed by pressing isaring containing delivery ports,… … a short time to allow her to settle down. When the order on the whole, judging the character of the Bradford produc- AUTOMATIC BALANCE ATTACHMENT FOR DELIVERY was given to work the pump, the vessel was brought to the ing field, that the falling off of production will be quite VALVES OF AIR…
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